Wen group list wetin dey wrong and vote on wetin matter pass, di winner na almost always di tin wey evribodi fit see: di waiting times, di outages, di complaints. Dat ones na results. Di causes dey further back, spread among pipo wey each one see different part.
True Causes dey let di whole group find dem. Evribodi dey write causes alone and without name. Den di group dey answer one question at a time: dis cause get big hand for dat one? Link dey count only wen three quarters gree. Wetin go come out na map, di deepest causes first, with evri disagreement still dey on am.
E dey work for team of ten or for whole city: plenti groups fit take di same question, each one go build im own map, and di maps go join. Pipo dey take part from dia phone, at dia own pace: few hours of real work in all, wey dem fit spread over days or do am one time.